单词：topoisornerase
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40.Development and the Environment With the development of industry,people are faced with the problem of a worsening environment.Fish are disappearing in many rivers and lots of green land is changing into desert. What are the causes of this?Firstly,
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The UN refugee agency says it is worried about the security of people living in isolated villages near the former conflict zones of Georgia. It says some 2,300 people from villages in the buffer zone between the Georgian town of Gori and the breakaw
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By Carol Pearson Washington, DC 29 May 2006 watch Autism Gene report Researchers at the University of Texas Southwestern have been able to genetically change mice so their behavior is similar to some people with autism. The researchers hope their di
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By Melinda Smith Baltimore, Maryland 05 September 2006 watch report Celiac Disease For thousands of years, human beings have suffered from a genetic disorder that has received attention only in the last few decades. The disorder is called celiac dis
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-For the last time,it was not a kiss. -我再说最后一次，那不是亲吻。 -Well, whatever you call it...it was disgusting.And if you would've done what I ordered you to do in the first place,we all could've been spared your little kiss of lif
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